Chemical Oxygen Demand Analyzer
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| Brand | Anjie |
|---|---|
| Origin | Shanghai, China |
| Model | AJ-5750 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Method (Closed-Tube, Reflux-Based) |
| Measurement Range | 16–700 mg/L COD |
| Accuracy | ≤5% (vs. Certified Reference Materials) |
| Repeatability | RSD ≤2.0% |
| Analysis Time | 14 minutes per sample |
| Batch Capacity | ≥21 samples |
| Safety Design | Fully Enclosed Digestion Chamber with Spherical Condenser |
| Operational Alert | Real-Time Reagent Vacuum Loss Detection |
| Compliance Context | Designed to support ISO 6060, ASTM D1252–06 (Method B), and HJ 828–2017 (Chinese EPA Standard) |
| Brand | Anjie |
|---|---|
| Origin | Shanghai, China |
| Model | AJ5700 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion with Potassium Dichromate (Cr(VI)) Oxidation |
| Measurement Range | 0–700 mg/L COD<sub>cr</sub> |
| Accuracy | ≤5% (vs. certified reference materials) |
| Repeatability | RSD ≤2.0% |
| Cycle Time | <15 min per sample |
| Sample Capacity | ≥30 positions |
| Digestion Stations | ≥30 |
| Titration Stations | ≥2 |
| Reagent Dispensing Precision | ±0.2% |
| Safety Design | Negative-pressure enclosed chamber with fume containment |
| Waste Handling | Integrated废液 collection with overflow alarm |
| Connectivity | TCP/IP & Wi-Fi |
| Data Export Formats | PDF, Word, Excel, CSV, RTF, HTML |
| Brand | AOE |
|---|---|
| Origin | Shanghai, China |
| Model | WA655 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | UV-Vis Absorption Spectrophotometry |
| Wavelength Range | 190–1100 nm |
| Wavelength Accuracy | ±0.5 nm |
| Photometric Accuracy | <0.5% T |
| Photometric Repeatability | <0.2% T |
| Stray Light | <0.05% T |
| Optical Stability | ±0.002 A/h |
| Detection Limits | TN: 0.1 mg/L, TP: 0.05 mg/L, NH₃-N: 0.01 mg/L, COD: 0.02 mg/L |
| Measurement Ranges | TN: 2–15,000 mg/L, TP: 1–10 mg/L, NH₃-N: 0.01–30 mg/L, COD: 0.02–100 mg/L |
| Measurement Error | TN < ±8%, TP < ±5%, NH₃-N < ±5%, COD < ±5% |
| Digestion Temperature Control | TN: 122 °C ±0.5 °C, TP: 120 °C ±0.5 °C, COD: 165 °C ±0.5 °C |
| Digestion Time | TN: 40 min, TP: 30 min, NH₃-N: 10 min, COD: 10 min |
| Digestion Mode | Sealed (TN, TP), Sealed or Open (NH₃-N, COD) |
| Sample Throughput | 16 samples per batch (TN/TP/COD), 20 samples per batch (NH₃-N), expandable |
| Display | 65K-color TFT LCD |
| Interface | USB |
| Brand | BBE / bbe Moldaenke |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Wavelength | 600 nm (standard for Cr(VI)/Cr(III) absorbance ratio) |
| Measurement Range | 10–500 mg/L, 10–1000 mg/L, or 10–1500 mg/L (user-selectable range switching) |
| Accuracy | ≤ ±10% of reading |
| Repeatability | ≤ ±5% RSD |
| Limit of Detection (LOD) | 10 mg/L COD |
| Cycle Time | 30 minutes per analysis |
| Sample Volume per Cycle | 1.5–3 L |
| Compliance | Designed to meet ISO 6060 and EPA Method 410.4 requirements for online COD monitoring |
| Brand | Benteng |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | BTB-1160 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (per HJ/T 399–2007) |
| Detection Limit | 0.1 mg/L |
| Analysis Time | 20 min per batch |
| Sample Throughput | 15 or 30 samples per run |
| Measurement Range | 0–15,000 mg/L (multi-range) |
| Temperature Control Range | Ambient to 120 °C |
| Accuracy | ±5% FS |
| Photometric Drift | <0.005 A within 20 min |
| Repeatability | ≤3% RSD |
| Display | 7-inch IPS capacitive touchscreen |
| Data Export | USB flash drive, Wi-Fi, RJ45 Ethernet |
| Built-in Thermal Printer | Optional auto/manual print |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Power Consumption | 20 W |
| Operating Environment | 5–40 °C, ≤85% RH |
| Dimensions (W×D×H) | 400 × 320 × 150 mm |
| Weight | 6.0 kg |
| Brand | DoctorWater |
|---|---|
| Model | Dr-M1101 |
| Type | Portable Multi-Parameter Analyzer |
| Measurement Principle | Electrochemical Sensing (COD via catalytic oxidation current detection) |
| COD Range | 0–500 mg/L |
| COD Accuracy | ≤ ±5% FS |
| Detection Limit | Not Specified (Typical for electrochemical COD sensors: ~2 mg/L) |
| Measurement Time | < 60 s per parameter |
| Display | 8-inch HD color capacitive touchscreen |
| Data Storage | Up to 1,000,000 records |
| Power Supply | Rechargeable Li-ion battery + AC adapter |
| Operating Environment | 0–50 °C, ≤85% RH (non-condensing) |
| Electrode Protection Rating | IP68 |
| Electrode Interface | Digital smart interface with auto-recognition |
| Number of Simultaneous Channels | 6 independent digital electrode ports (expandable to 12) |
| Readout Modes | Real-time, Timed, Interval |
| Data Output | USB 2.0 |
| Language Support | English & Chinese |
| Brand | DoctorWater |
|---|---|
| Origin | Hunan, China |
| Model | Dr-M1201P |
| Instrument Type | Portable |
| Measurement Principle | Electrochemical Sensing (Reagent-Free) |
| COD Range | 0–500 mg/L |
| Accuracy | ≤ ±5% FS |
| Detection Limit | Not Applicable (Reagent-Free Electrochemical Estimation) |
| Measurement Time | < 60 s |
| Display | 5-inch HD Color Touchscreen |
| Data Storage | 1,000,000 Records |
| Power Supply | Rechargeable Li-ion Battery + USB-C AC Adapter |
| Electrode Interface | 3 Independent Digital Sensor Ports |
| Electrode Protection Rating | IP68 |
| Operating Environment | 0–50 °C, ≤85% RH (non-condensing) |
| Compliance | Designed for Field & Lab Use per ISO 5814 (DO), ISO 7888 (EC), ISO 7027 (Turbidity), ASTM D1293 (pH), USP <643> (TOC/COD Correlation Context) |
| Brand | Doctor Water |
|---|---|
| Origin | Hunan, China |
| Model | Dr-T9010 |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (COD) & Nesslerization or Salicylate Method (Ammonia-N) |
| Wavelength Range | 340–900 nm |
| Wavelength Accuracy | ±1 nm |
| Wavelength Repeatability | <0.2 nm |
| Spectral Bandwidth | 4 nm |
| Photometric Accuracy | ±0.5% T |
| Photometric Repeatability | ≤0.2% T |
| Absorbance Resolution | 0.001 Abs |
| Optical Stability | ≤±0.005 Abs/20 min |
| Detection Range (COD) | 2–20,000 mg/L |
| Detection Range (NH₃-N) | 0.02–100 mg/L (configurable per method) |
| Accuracy | ≤±5% |
| Repeatability | ≤±2% |
| LOD (COD) | 2 mg/L |
| Measurement Time | ≤10 min (post-digestion) |
| Calibration | Single- or Multi-point with Pre-stored Curves (n=1000) |
| Display | 8-inch HD Capacitive Touchscreen |
| Data Storage | 1,000,000 records |
| Interface | USB-A for U-disk export & thermal printer |
| Power Supply | AC 100–240 V, 50/60 Hz |
| Dimensions | 392 × 315 × 170 mm |
| Weight | 4.4 kg |
| Housing Material | Flame-retardant ABS with Chemical Resistance |
| Brand | EURO TECH |
|---|---|
| Origin | Shanghai, China |
| Model | ET1151M |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelengths | 420 nm, 610 nm |
| COD Range | 0–1000 mg/L |
| TN Range | 0–150 mg/L |
| TP Range | 0.02–20 mg/L |
| Accuracy | ≤ ±5% |
| Repeatability | RSD ≤ 3% |
| Detection Limit | 0.1 mg/L (COD), 0.01 mg/L (TP), 0.1 mg/L (TN) |
| Measurement Time | 20 min per sample |
| Throughput | 1 sample per run |
| Optical Source | High-Stability LED |
| Wavelength Accuracy | ±3 nm |
| Photometric Modes | Absorbance, Transmittance (%T), Concentration |
| Stability | ΔA < 0.005 over 20 min |
| Brand | EXPEC |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | SUPEC 5000 COD |
| Pricing | Available Upon Request |
| Brand | EXPEC |
|---|---|
| Origin | Zhejiang, China |
| Model | SUPEC 5000 Series |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry (in accordance with HJ/T 399–2007) |
| Sample Throughput | Fully Automated Batch Processing |
| Automation Scope | Integrated Digestion, Cooling, Tube Handling, Mixing, and Photometric Measurement |
| Reagent Delivery | Precision Syringe Pump System |
| Optical Detection | Fixed-Wavelength Photometry (Compliant with Standard Method Requirements) |
| Compliance | HJ/T 399–2007 |
| Brand | FENK |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | OEM/ODM Producer |
| Instrument Type | Benchtop Laboratory Analyzer |
| Model | CL-101 |
| Measurement Principle | Spectrophotometry (Absorption-based) |
| Wavelengths | 420 nm, 540 nm, 620 nm, 700 nm |
| Accuracy | ≤ ±5% (COD: ≤ ±8%) |
| Repeatability | ≤ 3% |
| Optical Stability | < ±0.001 ABS |
| Data Storage | 1,000 records |
| Display | 4.3-inch capacitive touchscreen LCD |
| Dimensions | 210 × 150 × 110 mm |
| Weight | 1.35 kg |
| Power Supply | DC 5 V / 2 A |
| Battery Capacity | 4800 mAh |
| Operating Environment | −10 to 40 °C, <80% RH (non-condensing) |
| Calibration Modes | Real-time calibration & formula-based calibration |
| Photometric Modes | Absorbance, Concentration, Transmittance |
| Cuvette Format | 16 mm round glass tubes |
| Compliance | Designed for ASTM D1252 (COD), ISO 7150-1 (NH₃-N), and EPA Method 350.1 (Ammonia) |
| Brand | FPI |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic |
| Model | COD-2000 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Oxidation–Spectrophotometric Method |
| Measurement Range | 0–200 / 0–500 / 0–2000 mg/L COD |
| Accuracy | ≤ ±10% of reading |
| Repeatability | ≤ 3% RSD |
| Limit of Detection | 10 mg/L COD |
| Zero Drift (24 h) | ±5 mg/L |
| Maintenance Interval | Up to 30 days without service intervention |
| Reagent Consumption | <10%–20% of conventional segmented flow systems |
| Brand | Jilin University Xiaotian’e |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | GDYS-101SQ |
| Price Range | USD 700–1,400 (FOB) |
| Instrument Type | Portable |
| Detection Limit | 10.0 mg/L |
| Measurement Range | 0.0–500.0 mg/L |
| Accuracy | ±5% of reading |
| Method | Sealed Reflux Colorimetric Analysis |
| Analysis Time | ≤20 minutes per sample |
| Reagent Format | Single-use proprietary reagent vials |
| Brand | Greencarey Instruments |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Product Type | Laboratory-Grade COD Analyzer |
| Model | GL-200A |
| Detection Principle | Rapid Digestion Method (HJ/T 399–2007) |
| Wavelength Accuracy | ≤±0.001 Abs/20 min (Optical Source Lifetime: 100,000 hours) |
| Measurement Range | 0–15,000 mg/L (segmented) |
| Accuracy | ≤±5% (COD >50 mg/L) |
| Repeatability | ≤±3% |
| LOD | 5 mg/L |
| Digestion Temp/Time | 165 °C / 20 min |
| Total Cycle Time | 25 min/batch |
| Sample Throughput | 1 batch per 25 min |
| Chloride Interference Tolerance | up to 2,000 mg/L |
| Cuvette Format | 16 mm round digestion tube (no post-digestion transfer required) |
| Display | 4.3″ color TFT LCD |
| Data Output | USB flash drive export & built-in thermal printer |
| Optical System | Solid-state cold light source |
| Housing Material | ABS (chemical-resistant, heat-stable, impact-durable) |
| Power Supply | DC 12 V, 5 A |
| Operating Environment | 5–40 °C, ≤85% RH (non-condensing) |
| Dimensions | 300 × 222 × 88 mm |
| Weight | ~2.8 kg |
| Compliance | HJ/T 399–2007 (COD), HJ 535–2009 (NH₃-N), GB/T 11893–1989 (TP), HJ 636–2012 (TN), and 18+ additional water quality parameters with standardized photometric methods |
| Brand | Hach |
|---|---|
| Origin | USA |
| Model | DR1010 COD |
| Instrument Type | Portable |
| Measurement Principle | UV-Visible Absorption Spectrophotometry |
| Wavelengths | 420 nm and 610 nm |
| Photometric Accuracy | ±0.005 A at 1.0 ABS |
| Photometric Repeatability | ±0.005 A (0–1 A) |
| Wavelength Accuracy | ±1 nm |
| Photometric Linearity | ±0.002 A (0–1 A) |
| Detector | Silicon Photodiode |
| Power Supply | 190–240 V AC/50 Hz or 4×AA Alkaline Batteries |
| Environmental Rating | IP41 |
| Output Interface | RS232 Serial Port |
| Readout Modes | % Transmittance, Absorbance, Concentration |
| Brand | Jiada Xiaotianshe |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Portable |
| Measurement Principle | Potassium Dichromate Digestion Method (On-site Compatible) |
| Wavelengths | 410 nm and 630 nm |
| Measurement Ranges | Range 1: 0–100 mg/L |
| Range 2 | 50–1000 mg/L |
| Range 3 | 500–3000 mg/L |
| Accuracy | ±5% |
| Detection Limit | 4 mg/L |
| Light Source | High-Brightness LED |
| Power Supply | DC 9 V |
| Dimensions | 200 × 105 × 95 mm |
| Weight | 0.4 kg |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | COD-582 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (Online) |
| Measurement Range | 10.0–5000 mg/L |
| Accuracy | ±10% or ±5 mg/L (for values ≤50 mg/L) |
| Repeatability | 5% or 5 mg/L (for values ≤100 mg/L) |
| Resolution | 0.1 mg/L (≤100 mg/L), 1 mg/L (>100 mg/L) |
| Zero Drift | ±5 mg/L/24 h |
| Span Drift | ±10%/24 h |
| Power Supply | AC 220 V ±10%, 50 Hz |
| Dimensions (W×D×H) | 550 × 400 × 1680 mm |
| Weight | 50 kg |
| MTBF | ≥360 hours |
| Output | Isolated 4–20 mA DC (configurable upper/lower limits) |
| Communication | RS-232 or RS-485 (selectable) |
| Interface | 7-inch color LCD touchscreen |
| Maintenance Interval | Up to 30 days without service |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-571 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Dichromate Digestion Method (2-hour standard digestion per ISO 6060 / HJ 828–2017) |
| Wavelengths | 420 nm and 620 nm |
| Measurement Ranges | 0–150 mg/L (low-range), 0–1500 mg/L (high-range) |
| Accuracy | ±8% of reading |
| Repeatability | ≤3% RSD |
| Measurement Time | ~20 min post-digestion |
| Throughput | Batch analysis of multiple water samples |
| Absorbance Range | 0.000–2.000 Abs |
| Absorbance Accuracy | ±0.01 Abs or ±5% |
| Absorbance Repeatability | ≤0.005 Abs or 2% |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Transmittance Repeatability | ≤0.5% |
| Cuvette Compatibility | 10 mm square cuvettes and 16 mm round test tubes |
| Data Storage | 2000 measurement records with timestamp, sample ID, dilution factor, and calibration metadata |
| Connectivity | RS-232, USB-B, optional U disk export |
| Power Supply | AC 100–240 V input / DC 24 V output adapter |
| Dimensions | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-572 |
| Price Range | USD 700 – 1,400 (FOB Shanghai) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Coulometric Titration (ASTM D1252–04, ISO 8467:1993 compliant) |
| COD Range | (0.0–100.0) mg/L (standard), extendable to (100.0–1000) mg/L via dilution or high-range mode |
| Accuracy | ±2 mg/L (absolute error at ≤100 mg/L) |
| Repeatability | RSD ≤ 2% |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions (W×D×H) | 300 × 235 × 100 mm |
| Weight | 3.0 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | COD-580 |
| Instrument Type | Online Analyzer |
| Measurement Principle | Electrochemical Oxidation (Hydroxyl Electrode Method) |
| Measurement Range | 10.0–1000 mg/L |
| Resolution | 0.1 mg/L |
| Accuracy | ±5% of Full Scale (FS) |
| Repeatability | ≤3% FS |
| Zero Drift | ±5 mg/L per 24 h |
| Span Drift | ±10% per 24 h |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions (W×D×H) | 600 × 455 × 720 mm |
| Weight | 50 kg |
| Interface Options | RS-232 standard |
| Display | 7-inch color touchscreen with Chinese UI |
| Brand | LeiCi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | DGS-450 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Potassium Dichromate Digestion Method (for COD), Nesslerization (for Ammonia-N), Molybdate Blue Spectrophotometry (for Total Phosphorus), Alkaline Potassium Persulfate Digestion with Chromotropic Acid (for Total Nitrogen) |
| Wavelengths | 420 nm, 470 nm, 620 nm, 700 nm |
| COD Range | (0.000–1500) mg/L (extendable to 15,000 mg/L) |
| Ammonia-N Range | (0.000–10.00) mg/L (extendable to 100.0 mg/L) |
| Total Phosphorus Range | (0.000–1.000) mg/L (extendable to 10.00 mg/L) |
| Total Nitrogen Range | (0.000–30.00) mg/L (extendable to 300.0 mg/L) |
| Absorbance Range | (0.000–2.000) Abs |
| Wavelength Accuracy | ±4 nm |
| Transmittance Error | ±2% |
| Photometric Repeatability | ≤0.5% |
| Ammonia-N Accuracy | ±5% |
| COD & Total Phosphorus & Total Nitrogen Accuracy | ±8% (COD & TP), ±1 mg/L (≤10 mg/L TN) or ±5% (>10 mg/L TN) |
| Repeatability (all parameters) | ≤3% |
| Detection Limits | Ammonia-N ≤0.03 mg/L |
| Cell Format | 25 mm cuvette / 16 mm tube |
| Power Supply | AC 100–240 V input, DC 20 V output |
| Dimensions | 302 × 205 × 122 mm |
| Weight | 1.33 kg |
| Data Storage | 500 records per parameter |
| Interface | RS-232, USB-B, U-disk export support |
| Brand | Lianhua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-P3COD |
| Instrument Type | Portable |
| Measurement Principle | Potassium Dichromate Digestion Method (Portable) |
| Wavelengths | 420 nm and 610 nm |
| Measurement Range | 0–15,000 mg/L COD |
| Accuracy | ≤ ±8% for values ≤ 50 mg/L |
| Repeatability | ≤ ±3% |
| Batch Processing Capacity | 6 / 9 / 16 / 25 samples (user-selectable) |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-3C(V8) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion–Spectrophotometric Method (HJ/T 399–2007 compliant) |
| Wavelength | 610 ± 20 nm |
| COD Range | High-range: 20–10,000 mg/L (segmented) |
| Accuracy | ≤ ±8% for COD ≤ 50 mg/L |
| Repeatability | ≤ ±3% |
| Detection Limit | 0.1 mg/L |
| Analysis Time | 20 minutes per batch |
| Sample Throughput | 16 samples per run |
| Brand | Lianhua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-T3COD |
| Pricing | Upon Request |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Rapid Digestion Method (HJ/T 399–2007) |
| Measurement Range | 20–10000 mg/L (multi-range, segmented) |
| Accuracy | ≤8% |
| Repeatability | ≤3% |
| Brand | Lianhua Technology |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | LH-CM3H(V11) |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Measurement Range | 0.3–20 mg/L (multi-range segmented) |
| Accuracy | ≤ ±10% |
| Repeatability | ≤ ±5% |
| Limit of Detection (LOD) | 0.08 mg/L |
| Analysis Time per Batch | 50 minutes |
| Sample Throughput | 16 samples per run |
| Brand | LoHua |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Regional Classification | Domestic (China) |
| Model | LH-T600 |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelengths | 610 nm / 420 nm |
| COD Range | 0–15,000 mg/L |
| Accuracy | ≤5% |
| Repeatability | ≤±3% |
| LOD | 0.5 mg/L |
| Analysis Time per Batch | 20 min |
| Throughput | 30 samples per run |
| Brand | LoHua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | 5B-3B(V11) |
| Instrument Type | Laboratory Benchtop Analyzer |
| Measurement Principle | Absorption Photometry (Multi-Wavelength Optical Detection) |
| Wavelength Range | Programmable Multi-Wavelength (e.g., 420 nm, 470 nm, 620 nm, 700 nm) |
| Measurement Range | 0–15,000 mg/L (COD equivalent) |
| Accuracy | ≤ ±5–10% of reading |
| Repeatability | ≤ ±5–10% RSD |
| Detection Limit | 2–15,000 mg/L (method-dependent) |
| Analysis Time | COD < 20 min |
| Batch Capacity | 16 / 25 / 30 samples (user-selectable cuvette rack configuration) |
| Brand | LoHua Tech |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Benchtop Laboratory Analyzer |
| Measurement Principle | Rapid Digestion Spectrophotometry |
| Wavelength Configuration | Multi-Wavelength (610 nm for COD, 420 nm for Ammonia-N) |
| Measurement Range | COD: 0–15,000 mg/L (multi-range auto-segmentation) |
| Ammonia-N | 0–160 mg/L (multi-range auto-segmentation) |
| Accuracy | ≤ ±5% of reading |
| Repeatability | ≤ ±3% RSD |
| Detection Limit | 0.006 mg/L (Ammonia-N) |
| Analysis Time | <20 min (COD), <15 min (Ammonia-N) |
| Batch Capacity | 16 samples per run |
| Data Storage | 12,000 measurement records with timestamp, instrument parameters, and result metadata |
| Calibration | Onboard curve generation via standard solution input and linear/nonlinear regression |
| Connectivity | USB interface + optional infrared wireless module |
| Thermal Control | Adaptive power modulation for 16-position digestion block with over-temperature and time-delay safety cutoff |
| Built-in Thermal Printer | Supports on-demand printout of current/historical results |
| Brand | Macherey-Nagel (Germany) |
|---|---|
| Origin | Germany |
| Model | PF-3 919342 |
| Instrument Type | Portable |
| Measurement Principle | UV Absorption Spectrophotometry |
| Wavelength | 365 nm |
| Measurement Range | 2–60,000 mg/L COD |
| Repeatability | High precision |
| Detection Limit | Low (optimized for high-sensitivity UV absorption) |
| Measurement Time | <5 seconds per sample |
| Sample Throughput | Single-sample mode |
| Optical System | LED-based photometer with interference filters (365/450/595 nm) |
| Wavelength Accuracy | ±2 nm |
| Bandwidth (FWHM) | 10–12 nm |
| Detector | Silicon photodiode |
| Cuvette Format | 16 mm round tubes |
| Data Storage | 50 measurement records |
| Display | Graphical LCD (64 × 128 pixels) |
| Operating Temperature | 10–40 °C |
| Relative Humidity | ≤80% RH (non-condensing) |
| Power Supply | 3×AA batteries (alkaline or rechargeable), USB bus power, optional internal rechargeable battery |
| Enclosure Rating | IP68 |
| Dimensions | 170 × 95 × 68 mm |
| Weight | 0.5 kg |
| Compliance | CE-marked |
| Warranty | 12 months |